/**
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * This file is a part of the CANN Open Software.
 * Licensed under CANN Open Software License Agreement Version 1.0 (the "License").
 * Please refer to the License for details. You may not use this file except in compliance with the License.
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
 * See LICENSE in the root of the software repository for the full text of the License.
 */

/**
 * @file main.cpp
 */
#include <algorithm>
#include <cstdint>
#include <iostream>
#include <vector>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fstream>
#include <fcntl.h>

#include "acl/acl.h"
#include "aclnn_token_shift.h"

#define SUCCESS 0
#define FAILED 1

#define INFO_LOG(fmt, args...) fprintf(stdout, "[INFO]  " fmt "\n", ##args)
#define WARN_LOG(fmt, args...) fprintf(stdout, "[WARN]  " fmt "\n", ##args)
#define ERROR_LOG(fmt, args...) fprintf(stderr, "[ERROR]  " fmt "\n", ##args)

#define CHECK_RET(cond, return_expr) \
    do {                             \
        if (!(cond)) {               \
            return_expr;             \
        }                            \
    } while (0)

#define LOG_PRINT(message, ...)         \
    do {                                \
        printf(message, ##__VA_ARGS__); \
    } while (0)

bool ReadFile(const std::string &filePath, size_t fileSize, void *buffer, size_t bufferSize)
{
    struct stat sBuf;
    int fileStatus = stat(filePath.data(), &sBuf);
    if (fileStatus == -1) {
        ERROR_LOG("failed to get file %s", filePath.c_str());
        return false;
    }
    if (S_ISREG(sBuf.st_mode) == 0) {
        ERROR_LOG("%s is not a file, please enter a file", filePath.c_str());
        return false;
    }

    std::ifstream file;
    file.open(filePath, std::ios::binary);
    if (!file.is_open()) {
        ERROR_LOG("Open file failed. path = %s", filePath.c_str());
        return false;
    }

    std::filebuf *buf = file.rdbuf();
    size_t size = buf->pubseekoff(0, std::ios::end, std::ios::in);
    if (size == 0) {
        ERROR_LOG("file size is 0");
        file.close();
        return false;
    }
    if (size > bufferSize) {
        ERROR_LOG("file size is larger than buffer size");
        file.close();
        return false;
    }
    buf->pubseekpos(0, std::ios::in);
    buf->sgetn(static_cast<char *>(buffer), size);
    fileSize = size;
    file.close();
    return true;
}

bool WriteFile(const std::string &filePath, const void *buffer, size_t size)
{
    if (buffer == nullptr) {
        ERROR_LOG("Write file failed. buffer is nullptr");
        return false;
    }

    int fd = open(filePath.c_str(), O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWRITE);
    if (fd < 0) {
        ERROR_LOG("Open file failed. path = %s", filePath.c_str());
        return false;
    }

    auto writeSize = write(fd, buffer, size);
    (void) close(fd);
    if (writeSize != size) {
        ERROR_LOG("Write file Failed.");
        return false;
    }

    return true;
}

int64_t GetShapeSize(const std::vector<int64_t> &shape)
{
    int64_t shapeSize = 1;
    for (auto i : shape) {
        shapeSize *= i;
    }
    return shapeSize;
}

int Init(int32_t deviceId, aclrtStream *stream)
{
    // 固定写法，acl初始化
    auto ret = aclInit(nullptr);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclInit failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtSetDevice(deviceId);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSetDevice failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtCreateStream(stream);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtCreateStream failed. ERROR: %d\n", ret); return FAILED);

    return SUCCESS;
}

template <typename T>
int CreateAclTensor(const std::vector<T> &hostData, const std::vector<int64_t> &shape, void **deviceAddr,
                    aclDataType dataType, aclTensor **tensor)
{
    auto size = GetShapeSize(shape) * sizeof(T);
    // 调用aclrtMalloc申请device侧内存
    auto ret = aclrtMalloc(deviceAddr, size, ACL_MEM_MALLOC_HUGE_FIRST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMalloc failed. ERROR: %d\n", ret); return FAILED);

    // 调用aclrtMemcpy将host侧数据拷贝到device侧内存上
    ret = aclrtMemcpy(*deviceAddr, size, hostData.data(), size, ACL_MEMCPY_HOST_TO_DEVICE);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtMemcpy failed. ERROR: %d\n", ret); return FAILED);

    // 调用aclCreateTensor接口创建aclTensor
    *tensor = aclCreateTensor(shape.data(), shape.size(), dataType, nullptr, 0, aclFormat::ACL_FORMAT_ND, shape.data(),
                              shape.size(), *deviceAddr);
    return SUCCESS;
}

int main(int argc, char **argv)
{
    // 1. （固定写法）device/stream初始化, 参考acl对外接口列表
    // 根据自己的实际device填写deviceId
    int32_t deviceId = 0;
    aclrtStream stream;
    auto ret = Init(deviceId, &stream);
    CHECK_RET(ret == 0, LOG_PRINT("Init acl failed. ERROR: %d\n", ret); return FAILED);

    // 2. 构造输入与输出，需要根据API的接口自定义构造
    int B = 16;
    int T = 32;
    int C = 2560;
    std::vector<int64_t> inputXShape = {B, T, C};
    std::vector<int64_t> inputRwkvagShape = {6, 1, 1, C};
    std::vector<int64_t> inputH0Shape = {B, 1, C};
    std::vector<int64_t> outputXrShape = {B, T, C};
    std::vector<int64_t> outputXwShape = {B, T, C};
    std::vector<int64_t> outputXkShape = {B, T, C};
    std::vector<int64_t> outputXvShape = {B, T, C};
    std::vector<int64_t> outputXaShape = {B, T, C};
    std::vector<int64_t> outputXgShape = {B, T, C};
    std::vector<int64_t> outputHtShape = {B, 1, C};
    void *inputXDeviceAddr = nullptr;
    void *inputRwkvagDeviceAddr = nullptr;
    void *inputH0DeviceAddr = nullptr;
    void *outputXrDeviceAddr = nullptr;
    void *outputXwDeviceAddr = nullptr;
    void *outputXkDeviceAddr = nullptr;
    void *outputXvDeviceAddr = nullptr;
    void *outputXaDeviceAddr = nullptr;
    void *outputXgDeviceAddr = nullptr;
    void *outputHtDeviceAddr = nullptr;
    aclTensor *inputX = nullptr;
    aclTensor *inputRwkvag = nullptr;
    aclTensor *inputH0 = nullptr;
    aclTensor *outputXr = nullptr;
    aclTensor *outputXw = nullptr;
    aclTensor *outputXk = nullptr;
    aclTensor *outputXv = nullptr;
    aclTensor *outputXa = nullptr;
    aclTensor *outputXg = nullptr;
    aclTensor *outputHt = nullptr;
    size_t inputXShapeSize = B*T*C;
    size_t inputRwkvagShapeSize = 6*C;
    size_t inputH0ShapeSize = B*1*C;
    size_t outputShapeSize = B*T*C;
    size_t outputHtShapeSize = B*1*C;
    std::vector<aclFloat16> inputXHostData(inputXShapeSize);
    std::vector<aclFloat16> inputRwkvagHostData(inputRwkvagShapeSize);
    std::vector<aclFloat16> inputH0HostData(inputH0ShapeSize);
    std::vector<aclFloat16> outputXrHostData(outputShapeSize);
    std::vector<aclFloat16> outputXwHostData(outputShapeSize);
    std::vector<aclFloat16> outputXkHostData(outputShapeSize);
    std::vector<aclFloat16> outputXvHostData(outputShapeSize);
    std::vector<aclFloat16> outputXaHostData(outputShapeSize);
    std::vector<aclFloat16> outputXgHostData(outputShapeSize);
    std::vector<aclFloat16> outputHtHostData(outputHtShapeSize);
    size_t dataType = sizeof(uint16_t);
    size_t fileSize = 0;
    void ** input1=(void **)(&inputXHostData);
    void ** input2=(void **)(&inputRwkvagHostData);
    void ** input3=(void **)(&inputH0HostData);
    //读取数据
    ReadFile("../input/input_x.bin", fileSize, *input1, inputXShapeSize * dataType);
    ReadFile("../input/input_rwkvag.bin", fileSize, *input2, inputRwkvagShapeSize * dataType);
    ReadFile("../input/input_h0.bin", fileSize, *input3, inputH0ShapeSize * dataType);

    INFO_LOG("Set input success");
    // 创建inputX aclTensor
    ret = CreateAclTensor(inputXHostData, inputXShape, &inputXDeviceAddr, aclDataType::ACL_FLOAT16, &inputX);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(inputRwkvagHostData, inputRwkvagShape, &inputRwkvagDeviceAddr, aclDataType::ACL_FLOAT16, &inputRwkvag);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(inputH0HostData, inputH0Shape, &inputH0DeviceAddr, aclDataType::ACL_FLOAT16, &inputH0);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    // 创建outputXr aclTensor
    ret = CreateAclTensor(outputXrHostData, outputXrShape, &outputXrDeviceAddr, aclDataType::ACL_FLOAT16, &outputXr);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputXwHostData, outputXwShape, &outputXwDeviceAddr, aclDataType::ACL_FLOAT16, &outputXw);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputXkHostData, outputXkShape, &outputXkDeviceAddr, aclDataType::ACL_FLOAT16, &outputXk);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputXvHostData, outputXvShape, &outputXvDeviceAddr, aclDataType::ACL_FLOAT16, &outputXv);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputXaHostData, outputXaShape, &outputXaDeviceAddr, aclDataType::ACL_FLOAT16, &outputXa);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputXgHostData, outputXgShape, &outputXgDeviceAddr, aclDataType::ACL_FLOAT16, &outputXg);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);
    ret = CreateAclTensor(outputHtHostData, outputHtShape, &outputHtDeviceAddr, aclDataType::ACL_FLOAT16, &outputHt);
    CHECK_RET(ret == ACL_SUCCESS, return FAILED);

    // 3. 调用CANN自定义算子库API
    uint64_t workspaceSize = 0;
    aclOpExecutor *executor;
    // 计算workspace大小并申请内存
    ret = aclnnTokenShiftGetWorkspaceSize(inputX, inputRwkvag, inputH0, outputXr, outputXw, outputXk, outputXv, outputXa, outputXg, outputHt, &workspaceSize, &executor);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnTokenShiftGetaclrtFree(outputXrDeviceAddr);WorkspaceSize failed. ERROR: %d\n", ret); return FAILED);
    void *workspaceAddr = nullptr;
    if (workspaceSize > 0) {
        ret = aclrtMalloc(&workspaceAddr, workspaceSize, ACL_MEM_MALLOC_HUGE_FIRST);
        CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("allocate workspace failed. ERROR: %d\n", ret); return FAILED;);
    }
    // 执行算子
    ret = aclnnTokenShift(workspaceAddr, workspaceSize, executor, stream);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclnnTokenShift failed. ERROR: %d\n", ret); return FAILED);

    // 4. （固定写法）同步等待任务执行结束
    ret = aclrtSynchronizeStream(stream);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("aclrtSynchronizeStream failed. ERROR: %d\n", ret); return FAILED);

    // 5. 获取输出的值，将device侧内存上的结果拷贝至host侧，需要根据具体API的接口定义修改
    auto size = GetShapeSize(outputXrShape);
    auto ht_size = GetShapeSize(outputHtShape);
    std::vector<aclFloat16> resultXrData(size, 0);
    std::vector<aclFloat16> resultXwData(size, 0);
    std::vector<aclFloat16> resultXkData(size, 0);
    std::vector<aclFloat16> resultXvData(size, 0);
    std::vector<aclFloat16> resultXaData(size, 0);
    std::vector<aclFloat16> resultXgData(size, 0);
    std::vector<aclFloat16> resultHtData(ht_size, 0);
    ret = aclrtMemcpy(resultXrData.data(), resultXrData.size() * sizeof(resultXrData[0]), outputXrDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultXwData.data(), resultXwData.size() * sizeof(resultXwData[0]), outputXwDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultXkData.data(), resultXkData.size() * sizeof(resultXkData[0]), outputXkDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultXvData.data(), resultXvData.size() * sizeof(resultXvData[0]), outputXvDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultXaData.data(), resultXaData.size() * sizeof(resultXaData[0]), outputXaDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultXgData.data(), resultXgData.size() * sizeof(resultXgData[0]), outputXgDeviceAddr, size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    ret = aclrtMemcpy(resultHtData.data(), resultHtData.size() * sizeof(resultHtData[0]), outputHtDeviceAddr, ht_size * sizeof(aclFloat16), ACL_MEMCPY_DEVICE_TO_HOST);
    CHECK_RET(ret == ACL_SUCCESS, LOG_PRINT("copy result from device to host failed. ERROR: %d\n", ret); return FAILED);
    void ** output1=(void **)(&resultXrData);
    void ** output2=(void **)(&resultXwData);
    void ** output3=(void **)(&resultXkData);
    void ** output4=(void **)(&resultXvData);
    void ** output5=(void **)(&resultXaData);
    void ** output6=(void **)(&resultXgData);
    void ** output7=(void **)(&resultHtData);
    //写出数据
    WriteFile("../output/xr.bin", *output1, outputShapeSize * dataType);
    WriteFile("../output/xw.bin", *output2, outputShapeSize * dataType);
    WriteFile("../output/xk.bin", *output3, outputShapeSize * dataType);
    WriteFile("../output/xv.bin", *output4, outputShapeSize * dataType);
    WriteFile("../output/xa.bin", *output5, outputShapeSize * dataType);
    WriteFile("../output/xg.bin", *output6, outputShapeSize * dataType);
    WriteFile("../output/ht.bin", *output7, outputHtShapeSize * dataType);
    INFO_LOG("Write output success");

    // 6. 释放aclTensor，需要根据具体API的接口定义修改
    aclDestroyTensor(inputX);
    aclDestroyTensor(inputRwkvag);
    aclDestroyTensor(inputH0);
    aclDestroyTensor(outputXr);
    aclDestroyTensor(outputXw);
    aclDestroyTensor(outputXk);
    aclDestroyTensor(outputXv);
    aclDestroyTensor(outputXa);
    aclDestroyTensor(outputXg);
    aclDestroyTensor(outputHt);

    // 7. 释放device资源，需要根据具体API的接口定义修改
    aclrtFree(inputXDeviceAddr);
    aclrtFree(inputRwkvagDeviceAddr);
    aclrtFree(inputH0DeviceAddr);
    aclrtFree(outputXrDeviceAddr);
    aclrtFree(outputXwDeviceAddr);
    aclrtFree(outputXkDeviceAddr);
    aclrtFree(outputXvDeviceAddr);
    aclrtFree(outputXaDeviceAddr);
    aclrtFree(outputXgDeviceAddr);
    aclrtFree(outputHtDeviceAddr);
    if (workspaceSize > 0) {
        aclrtFree(workspaceAddr);
    }
    aclrtDestroyStream(stream);
    aclrtResetDevice(deviceId);
    aclFinalize();
    return SUCCESS;
}
